diff options
Diffstat (limited to 'meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files')
4 files changed, 953 insertions, 0 deletions
diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/GPL-COPYING b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/GPL-COPYING new file mode 100644 index 0000000..d159169 --- /dev/null +++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/GPL-COPYING @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. + +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. + + 4. You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 8. If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 9. The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/MIT-COPYING b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/MIT-COPYING new file mode 100644 index 0000000..28e2a15 --- /dev/null +++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/MIT-COPYING @@ -0,0 +1,41 @@ + +This software is Copyright (C) 2013 Renesas Electronics Corporation + +You may use, distribute and copy this software under the terms of the MIT +license displayed below. + +----------------------------------------------------------------------------- + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + Alternatively, the contents of this file may be used under the terms of + the GNU General Public License Version 2 ("GPL") in which case the provisions + of GPL are applicable instead of those above. + + If you wish to allow use of your version of this file only under the terms of + GPL, and not to allow others to use your version of this file under the terms + of the MIT license, indicate your decision by deleting the provisions above + and replace them with the notice and other provisions required by GPL as set + out in the file called "GPL-COPYING" included in this distribution. If you do + not delete the provisions above, a recipient may use your version of this file + under the terms of either the MIT license or GPL. + +----------------------------------------------------------------------------- + + EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS + PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR + PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR + COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +----------------------------------------------------------------------------- diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/Makefile b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/Makefile new file mode 100644 index 0000000..9d35e2a --- /dev/null +++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/Makefile @@ -0,0 +1,14 @@ +obj-m := uio_imp.o + +SRC := $(shell pwd) + +all: + $(MAKE) -C $(KERNEL_SRC) M=$(SRC) + +modules_install: + $(MAKE) -C $(KERNEL_SRC) M=$(SRC) modules_install + +clean: + rm -f *.o *~ core .depend .*.cmd *.ko *.mod.c + rm -f Module.markers Module.symvers modules.order + rm -rf .tmp_versions Modules.symvers diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/uio_imp.c b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/uio_imp.c new file mode 100644 index 0000000..ca90d2c --- /dev/null +++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-uio-imp/files/uio_imp.c @@ -0,0 +1,559 @@ +/*************************************************************************/ /* + IMP Driver (kernel module) + + Copyright (C) 2015 - 2017 Renesas Electronics Corporation + + License Dual MIT/GPLv2 + + The contents of this file are subject to the MIT license as set out below. + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + Alternatively, the contents of this file may be used under the terms of + the GNU General Public License Version 2 ("GPL") in which case the provisions + of GPL are applicable instead of those above. + + If you wish to allow use of your version of this file only under the terms of + GPL, and not to allow others to use your version of this file under the terms + of the MIT license, indicate your decision by deleting the provisions above + and replace them with the notice and other provisions required by GPL as set + out in the file called "GPL-COPYING" included in this distribution. If you do + not delete the provisions above, a recipient may use your version of this file + under the terms of either the MIT license or GPL. + + This License is also included in this distribution in the file called + "MIT-COPYING". + + EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS + PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR + PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR + COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + GPLv2: + If you wish to use this file under the terms of GPL, following terms are + effective. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ /*************************************************************************/ + +#include <linux/platform_device.h> +#include <linux/uio_driver.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/dma-mapping.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> + +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> + +#define DRIVER_NAME "uio_imp" +#define DRIVER_VER "0.0" + +#define LUIO_DEVICE_IMP 0 +#define LUIO_DEVICE_IMPSC 1 +#define LUIO_DEVICE_IMPDES 2 +#define LUIO_DEVICE_IMRLSX 3 +#define LUIO_DEVICE_IMRX 4 +#define LUIO_DEVICE_MEM 5 +#define LUIO_DEVICE_VSP 6 +#define LUIO_DEVICE_IMPDMAC 7 + +#define IMP_INTERNAL_REG_SIZE 0x1000 +#define IMP_NUM_DIST_HWIRQ 32 + +static int bsize = 7 * 1024 * 1024; +module_param(bsize, uint, S_IRUGO); + +static bool clear_int = 0; +module_param(clear_int, bool, S_IRUGO); + +struct imp_dev_data { + int dtype; + irqreturn_t (*handler)(int irq, struct uio_info *dev_info); + void (*sreset)(struct uio_info *info); + const char *name; +}; + +struct uio_imp_platdata { + struct uio_info *uioinfo; + struct platform_device *pdev; + const struct imp_dev_data *dev_data; + + struct irq_chip irq_chip; + struct irq_domain *irq_domain; + unsigned int domain_irq[IMP_NUM_DIST_HWIRQ]; + int max_hwirq; +}; + +static unsigned int ReadReg(struct uio_info *info, + unsigned long reg_offs) +{ + return ioread32(info->mem[0].internal_addr + reg_offs); +} + +static void WriteReg(struct uio_info *info, + unsigned long reg_offs, u32 data) +{ + iowrite32(data, info->mem[0].internal_addr + reg_offs); +} + +static irqreturn_t imp_handler(int irq, struct uio_info *dev_info) +{ + u32 stat = ReadReg(dev_info, 0x10); + + if (clear_int && (stat & 0x00000020)) { + /* clear INT state */ + WriteReg(dev_info, 0x10, 0x00000020); + return IRQ_NONE; + } + + if (stat != 0) { + /* mask all interrupts */ + WriteReg(dev_info, 0x14, ReadReg(dev_info, 0x14) & 0x0fffffff); + + return IRQ_HANDLED; + } else { + return IRQ_NONE; + } +} + +static void imp_sreset(struct uio_info *info) +{ + /* software reset */ + WriteReg(info, 0x08, 0x80000000); + WriteReg(info, 0x08, 0x00000000); + ReadReg(info, 0x08); + + /* 32bit addressing mode */ + WriteReg(info, 0x08, 0x00000001); + + /* mask all interrupts */ + WriteReg(info, 0x14, 0); +} + +static irqreturn_t impsc_handler(int irq, struct uio_info *dev_info) +{ + u32 stat = ReadReg(dev_info, 0x14); + + if (clear_int && (stat & 0x00000004)) { + /* clear INT state */ + WriteReg(dev_info, 0x18, 0x00000004); + return IRQ_NONE; + } + + if (stat != 0) { + /* mask all interrupts */ + WriteReg(dev_info, 0x20, 0xffffffff); + + return IRQ_HANDLED; + } else { + return IRQ_NONE; + } +} + +static void impsc_sreset(struct uio_info *info) +{ + /* software reset */ + WriteReg(info, 0x08, 0x00000001); + WriteReg(info, 0x08, 0x00000000); + ReadReg(info, 0x08); + + /* mask all interrupts */ + WriteReg(info, 0x20, 0xffffffff); +} + +static irqreturn_t impdist_handler(int irq, struct uio_info *dev_info) +{ + unsigned int bit; + unsigned long stat; + struct uio_imp_platdata *priv = dev_info->priv; + + stat = ReadReg(dev_info, 0x100); /* sr */ + stat &= ~ReadReg(dev_info, 0x10c); /* imr */ + + if (stat & 0x100) + stat |= ReadReg(dev_info, 0x110); /* g0intsel */ + if (stat & 0x200) + stat |= ReadReg(dev_info, 0x114); /* g1intsel */ + if (stat & 0x400) + stat |= ReadReg(dev_info, 0x118); /* g2intsel */ + stat &= ~0x700; + + if (!stat) + return IRQ_NONE; + + for_each_set_bit(bit, &stat, IMP_NUM_DIST_HWIRQ) + generic_handle_irq(priv->domain_irq[bit]); + + return IRQ_HANDLED; +} + +static void impdist_irq_enable(struct irq_data *d) +{ + struct uio_imp_platdata *priv = irq_data_get_irq_chip_data(d); + int hw_irq = irqd_to_hwirq(d); + unsigned int d_var; + + d_var = ReadReg(priv->uioinfo, 0x10c) & ~BIT(hw_irq); + WriteReg(priv->uioinfo, 0x10c, d_var); +} + +static void impdist_irq_disable(struct irq_data *d) +{ + struct uio_imp_platdata *priv = irq_data_get_irq_chip_data(d); + int hw_irq = irqd_to_hwirq(d); + unsigned int d_var; + + d_var = ReadReg(priv->uioinfo, 0x10c) | BIT(hw_irq); + WriteReg(priv->uioinfo, 0x10c, d_var); +} + +static int impdist_irq_domain_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct uio_imp_platdata *priv = h->host_data; + + dev_dbg(&priv->pdev->dev, "impdist_irq_domain_map: virq=%d, hw=%d\n", virq, (int)hw); + priv->domain_irq[hw] = virq; + irq_set_chip_data(virq, priv); + irq_set_chip_and_handler(virq, &priv->irq_chip, handle_simple_irq); + return 0; +} + +static struct irq_domain_ops impdist_irq_domain_ops = { + .map = impdist_irq_domain_map, +}; + +static void impdist_sreset(struct uio_info *info) +{ + WriteReg(info, 0x500, 0); +} + +static irqreturn_t impdmac_handler(int irq, struct uio_info *dev_info) +{ + u32 stat = ReadReg(dev_info, 0x08); + + if (clear_int && (stat & 0x00000040)) { + /* clear INT state */ + WriteReg(dev_info, 0x0c, 0x00000040); + return IRQ_NONE; + } + + if (stat != 0) { + /* mask all interrupts */ + WriteReg(dev_info, 0x14, 0xffffffff); + + return IRQ_HANDLED; + } else { + return IRQ_NONE; + } +} + +static void impdmac_sreset(struct uio_info *info) +{ + /* software reset */ + WriteReg(info, 0x04, 0x80000000); + WriteReg(info, 0x04, 0x00000000); + ReadReg(info, 0x04); + + /* mask all interrupts */ + WriteReg(info, 0x14, 0xffffffff); +} + +static const struct imp_dev_data imp_dev_data_legacy = { + .dtype = LUIO_DEVICE_IMP, + .handler = imp_handler, + .sreset = imp_sreset, +}; +static const struct imp_dev_data imp_dev_data_shader = { + .dtype = LUIO_DEVICE_IMPSC, + .handler = impsc_handler, + .sreset = impsc_sreset, +}; +static const struct imp_dev_data imp_dev_data_distributer = { + .dtype = LUIO_DEVICE_IMPDES, + .handler = impdist_handler, + .sreset = impdist_sreset, +}; +static const struct imp_dev_data imp_dev_data_memory = { + .dtype = LUIO_DEVICE_MEM, +}; +static const struct imp_dev_data imp_dev_data_dmac = { + .dtype = LUIO_DEVICE_IMPDMAC, + .handler = impdmac_handler, + .sreset = impdmac_sreset, +}; + +static const struct of_device_id of_imp_match[] = { + { .compatible = "renesas,impx4-legacy", .data = &imp_dev_data_legacy }, + { .compatible = "renesas,impx4-shader", .data = &imp_dev_data_shader }, + { .compatible = "renesas,impx4-distributer", .data = &imp_dev_data_distributer }, + { .compatible = "renesas,impx4-memory", .data = &imp_dev_data_memory }, + { .compatible = "renesas,impx5-dmac", .data = &imp_dev_data_dmac }, + { /* Terminator */ }, +}; +MODULE_DEVICE_TABLE(of, of_imp_match); + +static int uio_imp_open(struct uio_info *info, struct inode *inode) +{ + struct uio_imp_platdata *priv = info->priv; + + /* software reset */ + if (priv->dev_data->sreset) + priv->dev_data->sreset(info); + + return 0; +} + +static int uio_imp_release(struct uio_info *info, struct inode *inode) +{ + return 0; +} + +static int uio_imp_probe(struct platform_device *pdev) +{ + struct uio_info *uioinfo; + struct uio_imp_platdata *priv; + const struct imp_dev_data *dev_data; + struct resource *res; + struct uio_mem *uiomem; + int ret = -EINVAL; + + /* alloc uioinfo for one device */ + uioinfo = devm_kzalloc(&pdev->dev, sizeof(*uioinfo), + GFP_KERNEL); + if (!uioinfo) { + dev_err(&pdev->dev, "unable to kmalloc\n"); + return -ENOMEM; + } + + if (pdev->dev.of_node) { + const struct of_device_id *match; + match = of_match_node(of_imp_match, pdev->dev.of_node); + if (!match) + return ret; + + dev_data = match->data; + uioinfo->name = pdev->dev.of_node->name; + uioinfo->version = DRIVER_VER; + } else { + dev_data = pdev->dev.platform_data; + uioinfo->name = dev_data->name; + uioinfo->version = DRIVER_VER; + } + + if (!dev_data) { + dev_err(&pdev->dev, "missing platform_data\n"); + return ret; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(&pdev->dev, "unable to kmalloc\n"); + return -ENOMEM; + } + + priv->uioinfo = uioinfo; + priv->pdev = pdev; + priv->dev_data = dev_data; + + /* MEM */ + uiomem = &uioinfo->mem[0]; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (res) { + uiomem->memtype = UIO_MEM_PHYS; + uiomem->addr = res->start; + uiomem->size = resource_size(res); + uiomem->name = res->name; + + /* If reg[1] is shown, use it as internnal addr. + Otherwise, use reg[0]. */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (res) + uiomem->internal_addr = devm_ioremap_nocache(&pdev->dev, + res->start, resource_size(res)); + else + uiomem->internal_addr = devm_ioremap_nocache(&pdev->dev, + uiomem->addr, IMP_INTERNAL_REG_SIZE); + + if (!uiomem->internal_addr) { + dev_err(&pdev->dev, "unable to ioremap\n"); + return -ENOMEM; + } + } else if (dev_data->dtype == LUIO_DEVICE_MEM) { + /* allocate physically-contiguous memory */ + int buffer_size = bsize; + dev_info(&pdev->dev, "Allocating Buffer size = %d\n", buffer_size); + uiomem->memtype = UIO_MEM_PHYS; + uiomem->size = buffer_size; + uiomem->name = "mem"; + + uiomem->internal_addr = dmam_alloc_coherent(&pdev->dev, + buffer_size, &uiomem->addr, GFP_KERNEL); + if (!uiomem->internal_addr) { + dev_err(&pdev->dev, "unable to dma_alloc_coherent\n"); + return -ENOMEM; + } + } else { + dev_err(&pdev->dev, "missing memory map\n"); + return -EINVAL; + } + + /* IRQ */ + if (dev_data->handler) { + if (pdev->dev.of_node) + uioinfo->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + else { + ret = platform_get_irq(pdev, 0); + if (ret >= 0) + uioinfo->irq = ret; + else if (ret != -ENXIO) { + dev_err(&pdev->dev, "failed to get IRQ\n"); + return ret; + } + } + if (uioinfo->irq) { + uioinfo->handler = dev_data->handler; + if (dev_data->dtype != LUIO_DEVICE_IMPDES) + uioinfo->irq_flags = IRQF_SHARED; + } + } + dev_dbg(&pdev->dev, "irq = %d\n", (int)uioinfo->irq); + + /* irq demuxing on distributer handler */ + if (uioinfo->irq && dev_data->dtype == LUIO_DEVICE_IMPDES) { + struct irq_chip *irq_chip = &priv->irq_chip; + irq_chip->name = uioinfo->name; + irq_chip->irq_mask = impdist_irq_disable; + irq_chip->irq_unmask = impdist_irq_enable; + irq_chip->irq_enable = impdist_irq_enable; + irq_chip->irq_disable = impdist_irq_disable; + irq_chip->flags = IRQCHIP_SKIP_SET_WAKE; + + priv->irq_domain = irq_domain_add_simple(pdev->dev.of_node, + IMP_NUM_DIST_HWIRQ, 0, + &impdist_irq_domain_ops, priv); + if (!priv->irq_domain) { + dev_err(&pdev->dev, "cannot initialize irq domain\n"); + ret = -ENXIO; + goto err1; + } + } + + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&priv->pdev->dev); + +#ifdef CFG_USE_FPGA + dev_info(&pdev->dev, "%s(0x%08lx)\n", + uioinfo->name, (unsigned long)uiomem->addr); +#else + /* software reset */ + if (dev_data->sreset) + dev_data->sreset(uioinfo); + + /* print hardware version */ + if (uiomem->internal_addr && dev_data->dtype != LUIO_DEVICE_MEM) { + unsigned int vcr0 = ReadReg(uioinfo, 0x0); + unsigned int vcr1 = ReadReg(uioinfo, 0x4); + dev_info(&pdev->dev, "%s(0x%08lx): VCR = 0x%08x, 0x%08x\n", + uioinfo->name, (unsigned long)uiomem->addr, vcr0, vcr1); + } +#endif /* CFG_USE_FPGA */ + + uioinfo->open = uio_imp_open; + uioinfo->release = uio_imp_release; + uioinfo->priv = priv; + + ret = uio_register_device(&pdev->dev, priv->uioinfo); + if (ret) { + dev_err(&pdev->dev, "unable to register uio device\n"); + goto err2; + } + + platform_set_drvdata(pdev, priv); + return 0; + +err2: + pm_runtime_put_sync(&priv->pdev->dev); + pm_runtime_disable(&pdev->dev); + if (priv->irq_domain) + irq_domain_remove(priv->irq_domain); + +err1: + if (pdev->dev.of_node && uioinfo->irq) + irq_dispose_mapping(uioinfo->irq); + + return ret; +} + +static int uio_imp_remove(struct platform_device *pdev) +{ + struct uio_imp_platdata *priv = platform_get_drvdata(pdev); + + uio_unregister_device(priv->uioinfo); + pm_runtime_put_sync(&priv->pdev->dev); + pm_runtime_disable(&pdev->dev); + + if (priv->irq_domain) + irq_domain_remove(priv->irq_domain); + + if (pdev->dev.of_node && priv->uioinfo->irq) + irq_dispose_mapping(priv->uioinfo->irq); + + return 0; +} + +static int uio_imp_runtime_nop(struct device *dev) +{ + return 0; +} + +static const struct dev_pm_ops uio_imp_dev_pm_ops = { + .runtime_suspend = uio_imp_runtime_nop, + .runtime_resume = uio_imp_runtime_nop, +}; + +static struct platform_driver uio_imp = { + .probe = uio_imp_probe, + .remove = uio_imp_remove, + .driver = { + .name = DRIVER_NAME, + .pm = &uio_imp_dev_pm_ops, + .of_match_table = of_match_ptr(of_imp_match), + }, +}; + +module_platform_driver(uio_imp); + +MODULE_AUTHOR("RenesasElectronicsCorp."); +MODULE_DESCRIPTION("Userspace I/O driver for IMP"); +MODULE_LICENSE("GPL v2"); |